diff --git a/main/attendance/index.php b/main/attendance/index.php
index 51fa4f04f9..4ebde100c0 100755
--- a/main/attendance/index.php
+++ b/main/attendance/index.php
@@ -285,12 +285,16 @@ switch ($action) {
         }
         break;
     case 'calendar_add':
+        //no break
     case 'calendar_edit':
+        //no break
     case 'calendar_all_delete':
+        //no break
     case 'calendar_delete':
         if (!api_is_allowed_to_edit(null, true)) {
             api_not_allowed();
         }
+        //no break
     case 'calendar_list':
         $attendanceController->attendance_calendar($action, $attendance_id, $calendar_id);
         break;
diff --git a/main/auth/cas/cas_var.inc.php b/main/auth/cas/cas_var.inc.php
index 512a2d24ac..b4fbfb9ed5 100755
--- a/main/auth/cas/cas_var.inc.php
+++ b/main/auth/cas/cas_var.inc.php
@@ -20,7 +20,7 @@ switch (api_get_setting('cas_protocol')) {
     case 'SAML':
         $cas_auth_ver = SAML_VERSION_1_1;
         break;
-    default :
+    default:
         $cas_auth_ver = CAS_VERSION_2_0;
         break;
 }
diff --git a/main/auth/cas/lib/CAS.php b/main/auth/cas/lib/CAS.php
index 3ef0065f4f..03954fa543 100755
--- a/main/auth/cas/lib/CAS.php
+++ b/main/auth/cas/lib/CAS.php
@@ -1013,7 +1013,7 @@ class phpCAS
             self::trace('user is not authenticated, redirecting to the CAS server');
             $PHPCAS_CLIENT->forceAuthentication();
         } else {
-            self::trace('no need to authenticate (user `' . phpCAS:: getUser() . '\' is already authenticated)');
+            self::trace('no need to authenticate (user `' . self::getUser() . '\' is already authenticated)');
         }
 
         self::traceEnd();
diff --git a/main/exercise/export/exercise_import.php b/main/exercise/export/exercise_import.php
index d931d740a0..da10f58f9b 100755
--- a/main/exercise/export/exercise_import.php
+++ b/main/exercise/export/exercise_import.php
@@ -34,20 +34,18 @@ $cmd = (isset($_REQUEST['cmd'])? $_REQUEST['cmd'] : 'show_import');
 
 switch ($cmd) {
     case 'show_import':
-
         $display = '<p>'
-        .            get_lang('Imported exercises must consist of a zip or an XML file (IMS-QTI) and be compatible with your Claroline version.') . '<br>'
-        .            '</p>'
-        .            '<form enctype="multipart/form-data" action="" method="post">'
-        .            '<input name="cmd" type="hidden" value="import" />'
-        .            '<input name="uploadedExercise" type="file" /><br><br>'
-        .            get_lang('Import exercise') . ' : '
-        .            '<input value="' . get_lang('Ok') . '" type="submit" /> '
-        .            claro_html_button( $_SERVER['PHP_SELF'], get_lang('Cancel'))
-        .            '<br><br>'
-        .            '<small>' . get_lang('Max file size') . ' :  2&nbsp;MB</small>'
-        .            '</form>';
-
+            .            get_lang('Imported exercises must consist of a zip or an XML file (IMS-QTI) and be compatible with your Claroline version.') . '<br>'
+            .            '</p>'
+            .            '<form enctype="multipart/form-data" action="" method="post">'
+            .            '<input name="cmd" type="hidden" value="import" />'
+            .            '<input name="uploadedExercise" type="file" /><br><br>'
+            .            get_lang('Import exercise') . ' : '
+            .            '<input value="' . get_lang('Ok') . '" type="submit" /> '
+            .            claro_html_button( $_SERVER['PHP_SELF'], get_lang('Cancel'))
+            .            '<br><br>'
+            .            '<small>' . get_lang('Max file size') . ' :  2&nbsp;MB</small>'
+            .            '</form>';
         break;
     case 'import':
         //include needed librabries for treatment
diff --git a/main/gradebook/lib/gradebook_data_generator.class.php b/main/gradebook/lib/gradebook_data_generator.class.php
index 85f9eb14f0..11a00977a5 100755
--- a/main/gradebook/lib/gradebook_data_generator.class.php
+++ b/main/gradebook/lib/gradebook_data_generator.class.php
@@ -213,7 +213,7 @@ class GradebookDataGenerator
             api_get_session_id()
         );
 
-        $scoreDisplay = ScoreDisplay :: instance();
+        $scoreDisplay = ScoreDisplay::instance();
         $display = $scoreDisplay->display_score($score, SCORE_DIV_PERCENT_WITH_CUSTOM, SCORE_BOTH, true);
         $type = $item->get_item_type();
         if ($type == 'L' && get_class($item) == 'ExerciseLink') {
@@ -234,7 +234,7 @@ class GradebookDataGenerator
     private function buildAverageResultColumn(GradebookItem $item)
     {
         $score = $item->calc_score(null, 'average');
-        $scoreDisplay = ScoreDisplay :: instance();
+        $scoreDisplay = ScoreDisplay::instance();
         $display = $scoreDisplay->display_score($score, SCORE_DIV_PERCENT_WITH_CUSTOM, SCORE_BOTH, true);
         $type = $item->get_item_type();
 
diff --git a/main/inc/lib/access_url_edit_courses_to_url_functions.lib.php b/main/inc/lib/access_url_edit_courses_to_url_functions.lib.php
index e90ec98397..1c5b943119 100755
--- a/main/inc/lib/access_url_edit_courses_to_url_functions.lib.php
+++ b/main/inc/lib/access_url_edit_courses_to_url_functions.lib.php
@@ -45,7 +45,7 @@ class Accessurleditcoursestourl
                    ' LIMIT 11';
             $rs = Database::query($sql);
             $i=0;
-            while ($course = Database :: fetch_array($rs)) {
+            while ($course = Database::fetch_array($rs)) {
                 $i++;
                 if ($i<=10) {
                      $return .= '<a href="javascript: void(0);" onclick="javascript: add_user_to_url(\''.addslashes($course['code']).'\',\''.addslashes($course['title']).' ('.addslashes($course['code']).')'.'\')">'.$course['title'].' ('.$course['code'].')</a><br />';
diff --git a/main/inc/lib/add_many_session_to_category_functions.lib.php b/main/inc/lib/add_many_session_to_category_functions.lib.php
index 676d397f13..d6f631d417 100755
--- a/main/inc/lib/add_many_session_to_category_functions.lib.php
+++ b/main/inc/lib/add_many_session_to_category_functions.lib.php
@@ -24,7 +24,7 @@ class AddManySessionToCategoryFunctions
      */
     function search_courses($needle,$type)
     {
-        $tbl_session = Database :: get_main_table(TABLE_MAIN_SESSION);
+        $tbl_session = Database::get_main_table(TABLE_MAIN_SESSION);
         $xajax_response = new xajaxResponse();
         $return = '';
         if (!empty($needle) && !empty($type)) {
@@ -36,7 +36,7 @@ class AddManySessionToCategoryFunctions
             $rs = Database::query($sql);
             $course_list = array();
             $return .= '<select id="origin" name="NoSessionCategoryList[]" multiple="multiple" size="20" style="width:340px;">';
-            while ($course = Database :: fetch_array($rs)) {
+            while ($course = Database::fetch_array($rs)) {
                 $course_list[] = $course['id'];
                 $return .= '<option value="'.$course['id'].'" title="'.htmlspecialchars($course['name'],ENT_QUOTES).'">'.$course['name'].'</option>';
             }
diff --git a/main/inc/lib/auth.lib.php b/main/inc/lib/auth.lib.php
index 08e06af904..cac78dbebe 100755
--- a/main/inc/lib/auth.lib.php
+++ b/main/inc/lib/auth.lib.php
@@ -409,8 +409,8 @@ class Auth
     public function search_courses($search_term, $limit, $justVisible = false)
     {
         $courseTable = Database::get_main_table(TABLE_MAIN_COURSE);
-        $extraFieldTable = Database :: get_main_table(TABLE_EXTRA_FIELD);
-        $extraFieldValuesTable = Database :: get_main_table(TABLE_EXTRA_FIELD_VALUES);
+        $extraFieldTable = Database::get_main_table(TABLE_EXTRA_FIELD);
+        $extraFieldValuesTable = Database::get_main_table(TABLE_EXTRA_FIELD_VALUES);
 
         $limitFilter = CourseCategory::getLimitFilterFromArray($limit);
 
diff --git a/main/inc/lib/certificate.lib.php b/main/inc/lib/certificate.lib.php
index d4a8190160..1962aa34cc 100755
--- a/main/inc/lib/certificate.lib.php
+++ b/main/inc/lib/certificate.lib.php
@@ -163,7 +163,7 @@ class Certificate extends Model
         $params['hide_print_button'] = isset($params['hide_print_button']) ? true : false;
 
         if (isset($this->certificate_data) && isset($this->certificate_data['cat_id'])) {
-            $my_category = Category :: load($this->certificate_data['cat_id']);
+            $my_category = Category::load($this->certificate_data['cat_id']);
         }
 
         if (isset($my_category[0]) &&
diff --git a/main/inc/lib/formvalidator/Element/receivers.php b/main/inc/lib/formvalidator/Element/receivers.php
index 1161676d10..84e794b592 100755
--- a/main/inc/lib/formvalidator/Element/receivers.php
+++ b/main/inc/lib/formvalidator/Element/receivers.php
@@ -61,7 +61,7 @@ class HTML_QuickForm_receivers extends HTML_QuickForm_group
 		$renderer->setElementTemplate('{element}');
 		$select_boxes = $this->_elements[2];
 		$select_boxes->setElementTemplate('<div style="margin-left:20px;display:block;" id="receivers_'.$select_boxes->getName().'">'.$select_boxes->_elementTemplate.'</div>');
-		parent :: accept($renderer);
+		parent::accept($renderer);
 		$js = $this->getElementJS();
 		return $renderer->toHtml().$js;
 	}
diff --git a/main/inc/lib/groupmanager.lib.php b/main/inc/lib/groupmanager.lib.php
index bd83e32a85..4ca6d789e4 100755
--- a/main/inc/lib/groupmanager.lib.php
+++ b/main/inc/lib/groupmanager.lib.php
@@ -911,7 +911,7 @@ class GroupManager
 
         if (!empty($groups)) {
             foreach ($groups as $group) {
-                GroupManager::set_group_properties(
+                self::set_group_properties(
                     $group['id'],
                     $group['name'],
                     $group['description'],
@@ -2143,7 +2143,7 @@ class GroupManager
                 $row[] = $this_group['id'];
             }
 
-            if (GroupManager::userHasAccessToBrowse($user_id, $this_group, $session_id)) {
+            if (self::userHasAccessToBrowse($user_id, $this_group, $session_id)) {
                 // Group name
                 $groupNameClass = null;
                 if ($this_group['status'] == 0) {
diff --git a/main/inc/lib/mp3player/is_autostart.as.php b/main/inc/lib/mp3player/is_autostart.as.php
index 6d69def74e..ec6221fe10 100755
--- a/main/inc/lib/mp3player/is_autostart.as.php
+++ b/main/inc/lib/mp3player/is_autostart.as.php
@@ -17,9 +17,8 @@ switch ($_SESSION['whereami']) {
 	case 'document/edit' :
 		$autostart = 'false';
 	break;
-	default :
+	default:
 		$autostart = 'true';
 
 }
 echo utf8_encode('autostart='.$autostart);
-?>
diff --git a/main/inc/lib/zombie/zombie_report.class.php b/main/inc/lib/zombie/zombie_report.class.php
index 6062d4913c..6dffa5e3e3 100755
--- a/main/inc/lib/zombie/zombie_report.class.php
+++ b/main/inc/lib/zombie/zombie_report.class.php
@@ -304,7 +304,7 @@ class ZombieReport implements Countable
 
     function format_email($email)
     {
-        return Display :: encrypted_mailto_link($email, $email);
+        return Display::encrypted_mailto_link($email, $email);
     }
 
     function display($return = false)
diff --git a/main/lp/scorm.class.php b/main/lp/scorm.class.php
index 6af8a04401..1d8bfcb704 100755
--- a/main/lp/scorm.class.php
+++ b/main/lp/scorm.class.php
@@ -548,7 +548,7 @@ class scorm extends learnpath
 
         $courseInfo = empty($courseInfo) ? api_get_course_info() : $courseInfo;
 
-        $maxFilledSpace = DocumentManager :: get_course_quota($courseInfo['code']);
+        $maxFilledSpace = DocumentManager::get_course_quota($courseInfo['code']);
 
         $zip_file_path = $zip_file_info['tmp_name'];
         $zip_file_name = $zip_file_info['name'];
@@ -888,8 +888,8 @@ class scorm extends learnpath
         $zip_folder->create($scormfoldername.'/', PCLZIP_OPT_REMOVE_PATH, $scormfoldername.'/');
 
         //This file sending implies removing the default mime-type from php.ini
-        //DocumentManager :: file_send_for_download($zipfilename, true, $LPnamesafe.'.zip');
-        DocumentManager :: file_send_for_download($zipfilename, true);
+        //DocumentManager::file_send_for_download($zipfilename, true, $LPnamesafe.'.zip');
+        DocumentManager::file_send_for_download($zipfilename, true);
 
         // Delete the temporary zip file and directory in fileManage.lib.php
         my_delete($zipfilename);
diff --git a/main/session/session_import.php b/main/session/session_import.php
index 740cb995f8..63255ddea2 100644
--- a/main/session/session_import.php
+++ b/main/session/session_import.php
@@ -79,7 +79,7 @@ if (isset($_POST['formSent']) && $_POST['formSent']) {
                                 case 'teacher' :
                                     $status = 1;
                                     break;
-                                default :
+                                default:
                                     $status = 5;
                                     $error_message .= get_lang('StudentStatusWasGivenTo').' : '.$username.'<br />';
                             }
diff --git a/main/survey/ch_dropdown.php b/main/survey/ch_dropdown.php
index a03b0f611b..71c59af0cf 100644
--- a/main/survey/ch_dropdown.php
+++ b/main/survey/ch_dropdown.php
@@ -22,7 +22,7 @@ class ch_dropdown extends survey_question
             }
         }
 
-        parent :: addRemoveButtons($formData);
+        parent::addRemoveButtons($formData);
     }
 
     /**
diff --git a/main/survey/ch_multiplechoice.php b/main/survey/ch_multiplechoice.php
index 70bf6c33d6..b1a4a1f79a 100644
--- a/main/survey/ch_multiplechoice.php
+++ b/main/survey/ch_multiplechoice.php
@@ -45,7 +45,7 @@ class ch_multiplechoice extends survey_question
             }
         }
 
-        parent :: addRemoveButtons($formData);
+        parent::addRemoveButtons($formData);
     }
 
     /**
diff --git a/main/survey/ch_multipleresponse.php b/main/survey/ch_multipleresponse.php
index b10e7b5ab3..9b462067ec 100644
--- a/main/survey/ch_multipleresponse.php
+++ b/main/survey/ch_multipleresponse.php
@@ -29,7 +29,7 @@ class ch_multipleresponse extends survey_question
             }
         }
 
-        parent :: addRemoveButtons($formData);
+        parent::addRemoveButtons($formData);
     }
 
     /**
diff --git a/main/tracking/logins_details.php b/main/tracking/logins_details.php
index 907aafe583..eef7f875dc 100755
--- a/main/tracking/logins_details.php
+++ b/main/tracking/logins_details.php
@@ -124,7 +124,7 @@ $is_allowedToTrackEverybodyInCourse = $is_courseAdmin; // allowed to track all s
                     [<a href='" . api_get_self() . "?uInfo=$uInfo&view=$view&period=week&reqdate=$nextReqDate' class='specialLink'>" . get_lang('NextWeek') . "</a>]
                 ";
                     break;
-                default :
+                default:
                     $period = "month";
                 case "month" :
                     // previous and next date must be evaluated
diff --git a/main/webservices/cm_webservice_announcements.php b/main/webservices/cm_webservice_announcements.php
index 430558e064..bd10589797 100755
--- a/main/webservices/cm_webservice_announcements.php
+++ b/main/webservices/cm_webservice_announcements.php
@@ -63,7 +63,7 @@ class WSCMAnnouncements extends WSCM
                     $field_table = "content";
                     $announcements[0][$field_table] = nl2br_revert($announcements[0][$field_table]);
                     break;
-                default :
+                default:
                     $field_table = "title";
             }
 
diff --git a/plugin/dashboard/block_daily/block_daily.class.php b/plugin/dashboard/block_daily/block_daily.class.php
index 6aab591726..4413aec3b3 100755
--- a/plugin/dashboard/block_daily/block_daily.class.php
+++ b/plugin/dashboard/block_daily/block_daily.class.php
@@ -221,7 +221,7 @@ class BlockDaily extends Block
             }
 
             // Score
-            $tbl_grade_categories = Database :: get_main_table(
+            $tbl_grade_categories = Database::get_main_table(
                 TABLE_MAIN_GRADEBOOK_CATEGORY
             );
             $sql = "SELECT id from " . $tbl_grade_categories . "
diff --git a/plugin/dashboard/block_global_info/block_global_info.class.php b/plugin/dashboard/block_global_info/block_global_info.class.php
index 95b41d6a1d..8306fe17e3 100755
--- a/plugin/dashboard/block_global_info/block_global_info.class.php
+++ b/plugin/dashboard/block_global_info/block_global_info.class.php
@@ -84,7 +84,7 @@ class BlockGlobalInfo extends Block
     	return $data;
     }
 
- 	/**
+    /**
  	 * This method return a content html, it's used inside get_block method for showing it inside dashboard interface
  	 * @return string  content html
  	 */
@@ -95,7 +95,7 @@ class BlockGlobalInfo extends Block
          $content = '<h4>'.get_lang('GlobalPlatformInformation').'</h4>';
          $data_table = null;
          if (!empty($global_data)) {
-             $data_table = '<table class="table table-bordered" width:"95%">';
+             $data_table = '<table class="table table-bordered" width="95%">';
              $i = 1;
              foreach ($global_data as $data) {
                  if ($i%2 == 0) {
diff --git a/plugin/dashboard/block_student/block_student.class.php b/plugin/dashboard/block_student/block_student.class.php
index 19d6ddd9ff..dc61f38c36 100755
--- a/plugin/dashboard/block_student/block_student.class.php
+++ b/plugin/dashboard/block_student/block_student.class.php
@@ -122,7 +122,7 @@ class BlockStudent extends Block
 						$courseInfo = api_get_course_info($course_code);
 						$courseId = $courseInfo['real_id'];
 		 				$course_title = $course['title'];
-		 				$time = api_time_to_hms(Tracking :: get_time_spent_on_the_course($student['user_id'], $courseId));
+		 				$time = api_time_to_hms(Tracking::get_time_spent_on_the_course($student['user_id'], $courseId));
 		 				$students_table .= '<tr '.$style.'>
 											<td align="right">'.$course_title.'</td>
 											<td align="right">'.$time.'</td>
diff --git a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
index e051c53200..4c966f4f50 100644
--- a/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
+++ b/src/Chamilo/CourseBundle/Component/CourseCopy/CourseRestorer.php
@@ -3236,12 +3236,14 @@ class CourseRestorer
                         if (!empty($workData)) {
                             continue;
                         }
+                        break;
                     case FILE_OVERWRITE:
                         // Creating folder.
                         $workData = get_work_data_by_path(
                             $path,
                             $this->destination_course_info['real_id']
                         );
+                        break;
                     case FILE_RENAME:
                         $obj->params['new_dir'] = $obj->params['title'];
 
diff --git a/src/Chamilo/ThemeBundle/Model/TaskModel.php b/src/Chamilo/ThemeBundle/Model/TaskModel.php
index d3a0ec757c..d783dda4c5 100644
--- a/src/Chamilo/ThemeBundle/Model/TaskModel.php
+++ b/src/Chamilo/ThemeBundle/Model/TaskModel.php
@@ -42,7 +42,7 @@ class TaskModel implements TaskInterface
     /**
      * @var string
      */
-    protected $color = TaskModel::COLOR_AQUA;
+    protected $color = self::COLOR_AQUA;
 
     /**
      * @var null
@@ -54,7 +54,7 @@ class TaskModel implements TaskInterface
      * @param int    $progress
      * @param string $color
      */
-    function __construct($title = null, $progress = 0, $color = TaskModel::COLOR_AQUA)
+    function __construct($title = null, $progress = 0, $color = self::COLOR_AQUA)
     {
         $this->color    = $color;
         $this->progress = $progress;